those military bases, and so a little unit was established in atlanta, being that it was the largest city in the southeast, to make sure that those mosquito populations were kept under control around the military bases, so that malaria wouldn't come back in this part of the country. and the way you control it, and the way we did in this country, was you got to get rid of the mosquito vector. that takes a sophisticated... well, it takes an organized community effort. the chinese did that in southern china. many places around the world have had malaria problems-- brazil-- that they've brought under control. not so in africa. eradication efforts are erratic. yellow fever is another mosquito-transmitted virus that the french encountered when they occupied west africa. so the way the french dealt with this was to conduct an ongoing every-four-year campaign to vaccinate every person in every country they occupied. they had groups of doctors and nurses--that's all they did. they just went from village to village on this four year cycle. that way, the most that could happen is you'd have a group